fortran66 https://blog.hatena.ne.jp/fortran66/ fortran66のブログ https://fortran66.hatenablog.com/ ProjectEuler ソース・プログラム program PEuler2 implicit none integer :: ifib0, ifib1, ifib2, isum ifib0 = 1 ifib1 = 2 isum = ifib1 do ifib2 = ifib0 + ifib1 if (ifib2 > 4 * 10**6) exit if (mod(ifib2, 2) == 0) isum = isum + ifib2 ifib0 = ifib1 ifib1 = ifib2 end do print *, isum stop end program PEuler2 実行結果 4613732 続行するには… 190 <iframe src="https://hatenablog-parts.com/embed?url=https%3A%2F%2Ffortran66.hatenablog.com%2Fentry%2F20121227%2F1356615710" title="problem 002 - fortran66のブログ" class="embed-card embed-blogcard" scrolling="no" frameborder="0" style="display: block; width: 100%; height: 190px; max-width: 500px; margin: 10px 0px;"></iframe> Hatena Blog https://hatena.blog 2012-12-27 22:41:50 rich https://fortran66.hatenablog.com/entry/20121227/1356615710 1.0 100%